diff options
| author | Karthikeyan Ramasubramanian <kramasub@google.com> | 2021-02-09 15:03:33 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-02-12 07:48:42 +0000 |
| commit | 6bcaf6f9083904d0ff0e2dd0512903867fe9cc10 (patch) | |
| tree | 8f218920fb663b527d26b36bd9b07a1d17d26b1b /src/mainboard/system76 | |
| parent | b3a7c84b433d15ee32852d4260bfd6dc4683d2cf (diff) | |
mb/system76/lemp9: Configure IRQs as level triggered for HID over I2C
As per HID over I2C Protocol Specification[1] Version 1.00 Section 7.4,
the interrupt line used by the device is required to be level triggered.
Hence, this change updates the configuration of the HID over I2C devices
to be level triggered.
References:
[1] http://download.microsoft.com/download/7/d/d/7dd44bb7-2a7a-4505-ac1c-7227d3d96d5b/hid-over-i2c-protocol-spec-v1-0.docx
BUG=b:172846122
TEST=./util/abuild/abuild
Change-Id: Ice096777077bd2e9cfbaf744371fc372c0c05606
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50452
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard/system76')
| -rw-r--r-- | src/mainboard/system76/lemp9/devicetree.cb | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mainboard/system76/lemp9/devicetree.cb b/src/mainboard/system76/lemp9/devicetree.cb index 3a0758a7c7..263036d6d9 100644 --- a/src/mainboard/system76/lemp9/devicetree.cb +++ b/src/mainboard/system76/lemp9/devicetree.cb @@ -97,7 +97,7 @@ chip soc/intel/cannonlake chip drivers/i2c/hid register "generic.hid" = ""ELAN040D"" register "generic.desc" = ""ELAN Touchpad"" - register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_B3_IRQ)" + register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_B3_IRQ)" register "generic.probed" = "1" register "hid_desc_reg_offset" = "0x01" device i2c 15 on end |